26490385 has 4 divisors (see below), whose sum is σ = 31788468. Its totient is φ = 21192304.

The previous prime is 26490377. The next prime is 26490391. The reversal of 26490385 is 58309462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6411024 + 20079361 = 2532^2 + 4481^2 .

It is a cyclic number.

It is not a de Polignac number, because 26490385 - 2³ = 26490377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2649034 + ... + 2649043.

It is an arithmetic number, because the mean of its divisors is an integer number (7947117).

Almost surely, 2^26490385 is an apocalyptic number.

It is an amenable number.

26490385 is a deficient number, since it is larger than the sum of its proper divisors (5298083).

26490385 is an equidigital number, since it uses as much as digits as its factorization.

26490385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5298082.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 26490385 is about 5146.8810944105. The cubic root of 26490385 is about 298.1005358727.

The spelling of 26490385 in words is "twenty-six million, four hundred ninety thousand, three hundred eighty-five".